migrate from (meanwhile shut down) OSSRH to Central Publisher Portal

cf. https://central.sonatype.org/news/20250326_ossrh_sunset/
and https://central.sonatype.org/publish/publish-portal-ossrh-staging-api/

As the snapshots repository is currently not used,
its configuration is just a best guess at this point.

Signed-off-by: Manfred Hanke <Manfred.Hanke@tngtech.com>

Author: hankem

archunit-maven-test/build.gradle

@@ -16,8 +16,8 @@ def repositoryUrls = [
                 releases : 'https://nexus.int.tngtech.com/repository/maven-releases'
         ],
         sonatype: [
-                snapshots: 'https://oss.sonatype.org/content/repositories/snapshots',
-                releases : 'https://oss.sonatype.org/content/repositories/releases'
+                snapshots: 'https://central.sonatype.com/repository/maven-snapshots',
+                releases : 'https://ossrh-staging-api.central.sonatype.com/service/local/staging/deploy/maven2/'
         ]
 ]
 def createRepositoriesTag = { repoUrls ->

build-steps/release/publish.gradle

@@ -7,6 +7,8 @@ nexusPublishing {
     packageGroup = 'com.tngtech'
     repositories {
         sonatype {
+            nexusUrl.set(uri("https://ossrh-staging-api.central.sonatype.com/service/local/"))
+            snapshotRepositoryUrl.set(uri("https://central.sonatype.com/repository/maven-snapshots/"))
             username = findProperty("sonatypeUsername")
             password = findProperty("sonatypePassword")
         }

build-steps/release/test-release.gradle

@@ -9,7 +9,7 @@ task testRelease() {
             text = text.replace('mavenCentral()', '''
             mavenCentral()
             maven {
-                url "https://oss.sonatype.org/content/repositories/staging/"
+                url "https://ossrh-staging-api.central.sonatype.com/service/local/staging/deploy/maven2/"
                 credentials {
                     username project.getProperty('sonatypeUsername')
                     password project.getProperty('sonatypePassword')